any element of the lanthanide series (atomic numbers 57 through 71)
双语例句
用作形容词 (adj.)
At present, rare earth-containing nodular irons are developing still fast in China. 目前含稀土的球铁仍在中国迅速发展。
Rare earth luminescence materials of alkaline earth stannates have also been prepared via thermal decomposition of hydroxo stannate precursors. 利用某些新型带羟基的碱土锡酸盐作为前驱体，固相反应合成掺稀土的锡酸盐发光材料。
